[chc]

That isn't right. These players are not allowed to stream the games at all as long as they are affiliated with Riot. From the original source:

"onGamers has confirmed with the team representatives that LCS players are disallowed from streaming the games listed below outright"

[VintageCool]

I had the impression that LCS players were only disallowed from streaming those games if their stream advertised League of Legends content.

At the top of the Elo ladder, queue times can be up to half an hour as the matchmaking service tries to build a fair game. Many of these pro players will play another game (Super Meat Boy, LIMBO, Dust, Mark of the Ninja, Hearthstone) on stream while they're in queue. This ban seems to target other games that could be competitive e-sports, specifically the new Blizzard game Hearthstone.

[chc]

> I had the impression that LCS players were only disallowed from streaming those games if their stream advertised League of Legends content.

They're not allowed to stream those games if they have any affiliation with Riot.

> This ban seems to target other games that could be competitive e-sports, specifically the new Blizzard game Hearthstone.

It does lean that way, though I'm not sure there's much of a danger of Warcraft: Orcs & Humans becoming a competitive e-sport.